Ishikawa, Norihiko, You Su Sun, L. Wiley Nifong, Go Watanabe, and W. Randolph Chitwood. “How I Do It: Self-Retaining Atrial Retractors for Robotic and Minimally Invasive Mitral Valve Surgery”. The Heart Surgery Forum 10, no. 3 (April 24, 2007): E217-E218. Accessed May 12, 2024. https://journal.hsforum.com/index.php/HSF/article/view/979.